CN106396360B - A kind of gain fibre preparation method of online collapsing wire drawing - Google Patents
A kind of gain fibre preparation method of online collapsing wire drawing Download PDFInfo
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- CN106396360B CN106396360B CN201610765314.XA CN201610765314A CN106396360B CN 106396360 B CN106396360 B CN 106396360B CN 201610765314 A CN201610765314 A CN 201610765314A CN 106396360 B CN106396360 B CN 106396360B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention belongs to optical fiber preparation technical fields, disclose a kind of gain fibre preparation method of online collapsing wire drawing, comprising: prepare optical fiber prefabricated rod mandrel；Plug hydrofluoric acid (HF) solution pickling；Prepare non-circular shape casing；Casing hydrofluoric acid solution pickling；The non-circular shape casing and the optical fiber prefabricated rod mandrel are combined set and dress up preform sub-assembly；By the preform sub-assembly on wire-drawer-tower online collapsing, wire drawing and be applied as double-cladding active optical fiber.The present invention provides a kind of promotion optical fiber quality reliabilities, improve concentricity, and impurity is inhibited to introduce, and reduce optical fiber processing damage and improve the method for preparing optical fiber of production efficiency.
Description
Technical field
The present invention relates to optical fiber preparation technical field, in particular to a kind of gain fibre preparation side of online collapsing wire drawing
Method.
Background technique
Since laser was 20th century, after atomic energy, computer, semiconductor, the another important invention of the mankind.High power
Optical fiber laser is widely used in industrial materials processing, high-end manufacturing field, obtains in recent years as industrial laser of new generation
The extensive attention of each major industrial country of the world.It is clear that in optical fiber laser industrial chain, special optical fiber and optical-fiber laser
Device is closely related, and the manufacture of optical fiber laser is related to a variety of active and passive fiber, and wherein it is crucial that double cladding large mode
The rear-earth-doped Active Optical Fiber in field.
The structure of double cladding large mode field Active Optical Fiber transmits the inner cladding and shape of pump light by the fibre core of doping with rare-earth ions
The part such as low-refraction surrounding layer at pump waveguide forms, since pump light only just can be by rare earth ion when passing through fibre core
It absorbs and and then realizes that laser amplifier effect needs to destroy the cylindrosymmetry of inner cladding for the absorption efficiency for improving pump light
To reduce the generation of spiral light, this usually can by by inner cladding be contoured to it is non-circular realize, such as octagon.Cause
This, the preparation of double cladding large mode field Active Optical Fiber generally includes plug, casing, polishing, wire drawing and test.Active Optical Fiber
MCVD method can be used in plug preparation, and other methods such as OVD, VAD and PCVD etc. also can be selected.After the completion of plug, generally pass through
By in casing collapsing to plug, optical fiber is made under the action of heat in the casing of plug insertion appropriate size by casing technique
Prefabricated rods are required with reaching the core packet ratio of design, and the preform that casing is completed is processed into non-circular using mechanical grinding
The preform of shape finally carries out wire drawing coating and test.
Production of the above-mentioned tandem process flow currently used for Active Optical Fiber, still, this conventional online collapsing wire drawing
There are following disadvantages for gain fibre preparation method: plug carries out that light can be introduced to some extent in casing and bruting process
Fine concentricity decline, should not control optical fiber quality；Since plug manufacturing cost is higher, subsequent technique is once made a fault, it is difficult to
It remedies, scrap cost is high；The tandem process flow production cycle is longer, is unfavorable for the raising of production efficiency；Prefabricated rods polishing by
It is be easy to cause whole preform cracking in residual mechanical stress, production risk is larger.
Summary of the invention
The present invention provides a kind of gain fibre preparation method of online collapsing wire drawing, solves process in the prior art and draws
Enter concentricity, while the technical issues of bruting process causes prefabricated rods to damage.
In order to solve the above technical problems, the present invention provides a kind of gain fibre preparation method of online collapsing wire drawing, packet
It includes:
Prepare optical fiber prefabricated rod mandrel；
Using optical fiber prefabricated rod mandrel described in hydrofluoric acid solution pickling, impurity is removed；
Prepare the casing of non-circular shape；
Using hydrofluoric acid solution pickling described sleeve pipe, impurity is removed；
Described sleeve pipe and the optical fiber prefabricated rod mandrel are combined set and dress up preform sub-assembly；
The preform sub-assembly is mounted on wire-drawer-tower and carries out online collapsing, double-contracting is made in wire drawing and coating
Layer Active Optical Fiber.
Further, the gap of described sleeve pipe inner wall and the preform is less than or equal to 0.5mm.
Further, described sleeve pipe is placed in the HF solution soaking time and is more than or equal to 15min.
Further, described sleeve pipe is quartz glass tube.
Further, described sleeve pipe is the silica glass tube of doping, and refractive index is equal to or less than silica glass
The refractive index of glass.
Further, the step of preparation non-circular shape casing includes: that the outer wall of circular glass pipe is individually carried out machine
Tool is polished into non-circular shape casing；
Wherein, the non-circular shape casing include octagon or regular hexagon or square or rectangle or
" D " shape.Further, the optical fiber prefabricated rod mandrel is placed in the HF solution soaking time and is greater than or equal to 10min.
Further, the optical fiber prefabricated rod mandrel for preparing includes:
The plug prepared with MCVD method in the rare earth doped substance of fibre core and other is co-doped with substance；
The plug prepared with OVD method in the rare earth doped substance of fibre core and other is co-doped with substance；
The plug prepared with VAD method in the rare earth doped substance of fibre core and other is co-doped with substance；
The plug prepared with PCVD method in the rare earth doped substance of fibre core and other is co-doped with substance.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The gain fibre preparation method of the online collapsing wire drawing provided in the embodiment of the present application, on the one hand passes through optical fiber processing
Process is orderly processed, and HF solution dip operation is cooperated, and the impurity during substantially reducing introduces, and guarantees the quality of optical fiber；It is another
Aspect then avoids the moulding of prefabricated rods processed with plug combined complete again by the separately machined casing at non-circular shape
The damage of Cheng Zaocheng preform, while keeping preferable concentricity；Third, the preparation of non-circular shape casing and fibre-optical mandrel preparation
Can independent parallel carry out, substantially increase production efficiency；4th, non-circular shape casing can be tested individually, can if any error
Take remedial measure appropriate.
Detailed description of the invention
Fig. 1 is the flow chart of the gain fibre preparation method of online collapsing wire drawing provided in an embodiment of the present invention；
Fig. 2 is optical fiber prefabricated rod mandrel stick core provided in an embodiment of the present invention and cladding structure schematic diagram；
Fig. 3 is the structural schematic diagram of casing provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of combination of fiber-optic prefabricated rods provided in an embodiment of the present invention；
Fig. 5 is Active Optical Fiber structural schematic diagram provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present application is solved in the prior art by providing a kind of gain fibre preparation method of online collapsing wire drawing
The technical issues of process introduces impurity, while bruting process causes prefabricated rods to damage；The introducing of inhibition impurity is reached, has been promoted
Optical fiber quality；Reduce the technical effect of moulding damage.
In order to better understand the above technical scheme, below using octagon prefabricated rods as example, in conjunction with Figure of description
And above-mentioned technical proposal is described in detail in specific embodiment, it should be understood that in the embodiment of the present invention and embodiment
Specific features be detailed description to technical scheme, rather than the restriction to technical scheme is not being rushed
In the case where prominent, the technical characteristic in the embodiment of the present application and embodiment be can be combined with each other.
Referring to FIG. 1 to FIG. 5, a kind of gain fibre preparation method of online collapsing wire drawing provided in an embodiment of the present invention, packet
It includes:
Prepare optical fiber prefabricated rod mandrel (1,2)；
The optical fiber prefabricated rod mandrel is placed in the HF solution and is impregnated, impurity is removed；
Prepare octagon casing 3；
Described sleeve pipe is subjected to matching cutting according to the optical fiber prefabricated rod mandrel size, the immersion of HF solution is placed in, goes
Except impurity；
The octagon casing and the optical fiber prefabricated rod mandrel are combined set and dress up preform sub-assembly
4；
By the preform sub-assembly, double-cladding active light is made in online collapsing, wire drawing and coating on wire-drawer-tower
It is fine.
Specifically, exactly according to the structure of prefabricated rods from the inside to surface be sequence, individually prepare all parts, a side
Face is able to ascend processing efficiency, and the reliability of structure and quality is kept to inhibit the introducing of impurity by HF solution；Further, will
Separately machined plug and casing is assembled, and moulding is avoided to cause the damage of preform.
Referring to Fig. 5, bilayer coating includes: inner coating 5 and external coating 6.
Specifically, described the step of preparing octagon casing include: individually by circular glass pipe carry out mechanical grinding at
Octagon casing.That is, casing disengaging plug is separately machined, it is assembled again with plug after the completion, can be avoided processing impurity and draw
Enter, while avoiding damage to prefabricated rods.
Preferably, described sleeve pipe inner wall and the gap of the optical fiber prefabricated rod mandrel are less than or equal to
0.5mm。
Specifically, described sleeve pipe is quartz glass tube, described sleeve pipe be placed in soaking time in the HF solution be greater than or
Equal to 15min；The optical fiber prefabricated rod mandrel is placed in soaking time in the HF solution and is greater than or equal to 10min.Held by HF
The impurity in process is easily got rid of, guarantees the reliability of optical fiber.
This patent prepares double cladding large mode field Active Optical Fiber using the method that direct octagon casing combines wire drawing with plug,
Other special-shaped casings combine wire drawing with plug and prepare the protection scope that double cladding large mode field Active Optical Fiber etc. is the patent.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The gain fibre preparation method of the online collapsing wire drawing provided in the embodiment of the present application, on the one hand passes through optical fiber processing
Process is orderly processed, and HF solution dip operation is cooperated, and the impurity during substantially reducing introduces, and guarantees the quality of optical fiber；It is another
Aspect then avoids the moulding of prefabricated rods processed with plug combined complete again by the separately machined casing at non-circular shape
The damage of Cheng Zaocheng preform, while keeping preferable concentricity；Third, the preparation of non-circular shape casing and fibre-optical mandrel preparation
Can independent parallel carry out, substantially increase production efficiency；4th, non-circular shape casing can be tested individually, can if any error
Take remedial measure appropriate.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (7)
1. a kind of gain fibre preparation method of online collapsing wire drawing characterized by comprising
Prepare optical fiber prefabricated rod mandrel；
Using optical fiber prefabricated rod mandrel described in hydrofluoric acid solution pickling, impurity is removed；
Prepare the casing of non-circular shape；
Using hydrofluoric acid solution pickling described sleeve pipe, impurity is removed；
Described sleeve pipe and the optical fiber prefabricated rod mandrel are combined set and dress up preform sub-assembly；
The preform sub-assembly is mounted on wire-drawer-tower and carries out online collapsing, wire drawing and coating, double clad, which is made, to be had
Source optical fiber；
Wherein, the step of preparation non-circular shape casing includes:
The outer wall of circular glass pipe is individually subjected to mechanical grinding into non-circular shape casing；
Wherein, the non-circular shape casing includes octagon or regular hexagon or square or rectangle or " D "
Shape.
2. the gain fibre preparation method of collapsing wire drawing as described in claim 1 online, it is characterised in that: described sleeve pipe it is interior
The gap of wall and the optical fiber prefabricated rod mandrel is less than or equal to 0.5mm.
3. the gain fibre preparation method of online collapsing wire drawing as described in claim 1, it is characterised in that: described sleeve pipe is placed in
Soaking time is more than or equal to 15 minutes in the hydrofluoric acid solution.
4. the gain fibre preparation method of online collapsing wire drawing as claimed in claim 3, it is characterised in that: described sleeve pipe is stone
English glass tube.
5. the gain fibre preparation method of online collapsing wire drawing as claimed in claim 3, it is characterised in that: described sleeve pipe is to mix
Miscellaneous silica glass tube, refractive index of the refractive index equal to less than silica glass.
6. the gain fibre preparation method of online collapsing wire drawing as described in claim 1, it is characterised in that: the optical fiber prefabricating
Rod mandrel is placed in soaking time in the HF solution and is more than or equal to 200min.
7. the gain fibre preparation method of online collapsing wire drawing as described in any one of claims 1 to 6, which is characterized in that institute
It states and prepares optical fiber prefabricated rod mandrel and include:
The plug prepared with MCVD method in the rare earth doped substance of fibre core and other is co-doped with substance；
The plug prepared with OVD method in the rare earth doped substance of fibre core and other is co-doped with substance；
The plug prepared with VAD method in the rare earth doped substance of fibre core and other is co-doped with substance；
The plug prepared with PCVD method in the rare earth doped substance of fibre core and other is co-doped with substance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610765314.XA CN106396360B (en) | 2016-08-30 | 2016-08-30 | A kind of gain fibre preparation method of online collapsing wire drawing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610765314.XA CN106396360B (en) | 2016-08-30 | 2016-08-30 | A kind of gain fibre preparation method of online collapsing wire drawing |
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| CN106396360A CN106396360A (en) | 2017-02-15 |
| CN106396360B true CN106396360B (en) | 2019-01-25 |
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| CN111732335A (en) * | 2020-05-25 | 2020-10-02 | 华能(泰安)光电科技有限公司 | Method for restoring concentricity of optical fiber preform |
| CN117673874B (en) * | 2024-01-31 | 2024-05-14 | 中国航天三江集团有限公司 | High-power fiber laser and application method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255006A (en) * | 2008-04-10 | 2008-09-03 | 中天科技光纤有限公司 | Production method of high-bandwidth multi-mode fiber |
| WO2010148662A1 (en) * | 2009-06-23 | 2010-12-29 | 长飞光纤光缆有限公司 | Optical fiber preform and manufacturing method thereof |
| CN104291676A (en) * | 2014-08-25 | 2015-01-21 | 长飞光纤光缆股份有限公司 | Method for producing large-size bending insensitive multi-mode optical fiber preforms |
| CN104932054A (en) * | 2015-07-20 | 2015-09-23 | 富通集团有限公司 | Three-wrapping-layer thulium-doped optical fiber and preparation method thereof |
-
2016
- 2016-08-30 CN CN201610765314.XA patent/CN106396360B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255006A (en) * | 2008-04-10 | 2008-09-03 | 中天科技光纤有限公司 | Production method of high-bandwidth multi-mode fiber |
| WO2010148662A1 (en) * | 2009-06-23 | 2010-12-29 | 长飞光纤光缆有限公司 | Optical fiber preform and manufacturing method thereof |
| CN104291676A (en) * | 2014-08-25 | 2015-01-21 | 长飞光纤光缆股份有限公司 | Method for producing large-size bending insensitive multi-mode optical fiber preforms |
| CN104932054A (en) * | 2015-07-20 | 2015-09-23 | 富通集团有限公司 | Three-wrapping-layer thulium-doped optical fiber and preparation method thereof |
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